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CONCLUSION To know how to evaluate a friction term of Bernouli’s equation is very vital for engineering students and practical

case of steady flow in one dimension as in a pipe, duct, or channel. Based on what have been observed as well as data we got, we can conclude that Friction that reflected by pressure drop is corresponding to the flow rate. And another thing is each merger of pipe show different characteristic regarding pressure gradient, pressure drops in pipe increases as the flow rate is increased. Hence, it is suffice to say that the observe results follow the theory of Bernoulli’s Principle within the amount error, accordingly. The connection of pipes can be used to determine the head loss. Observation 4f & 4g is about three elements in parallel & series of piping connection. In these 2 observations, water flow through series & parallel before it reaches outlet. And after we compared 3 observations data, we find out in relatively same flow rate parallel pipe cause little pressure drops than series pipe. The H1 is mostly lower than the H2 for all 3 experiment, 4e, 4f, and 4g, and when the flowrate is increasing, the H is also increasing.